KMX
−$39.1K
1,015 sh @ $39
KMX
CARMAX INC
SEC CIK 1170010
$51.26
+8.5% · 90 days
90-day buys
$0
0 open-market
90-day sells
$0
0 open-market
Net insider flow
+$0
Net buying
Filings shown
28
Most recent
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At a glance
Insiders at KMX have made no open-market trades in the last 90 days — the activity below is grants, option exercises, and other routine filings.
Largest recent trade: Oneil Mark F, KMX's Director, spent $499.8K of their own money on 10,816 shares at $46, growing their stake 78%.
Most active filer: Stuckey John M Iii, with 6 transactions among the recent filings shown.
Insider transaction history
Form 4 filings for KMX, newest firstKMX
−$31.7K
822 sh @ $39
KMX
−$39.1K
1,015 sh @ $39
KMX
+$0
1,183 sh
KMX
−$13.8K
357 sh @ $39
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KMX
−$39.1K
1,015 sh @ $39
KMX
−$39.1K
1,015 sh @ $39
KMX
+$0
1,059 sh
KMX
−$12.3K
319 sh @ $39
KMX
+$0
195 sh
KMX
+$1.27M
30,558 sh @ $42
KMX
−$476.5K
11,423 sh @ $42
KMX
+$0
23,975 sh
KMX
+$0
160 sh
KMX
−$1.9K
49 sh @ $39
KMX
+$0
527 sh
KMX
Oneil Mark F, KMX's Director, spent $499.8K of their own money on 10,816 shares at $46, growing their stake 78%.
+$499.8K
10,816 sh @ $46
KMX
Steenrod Mitchell D, KMX's Director, spent $91.1K of their own money on 2,000 shares at $46, growing their stake 6%.
+$91.1K
2,000 sh @ $46
KMX
−$0
70 sh
KMX
−$0
15 sh
KMX
−$0
20 sh
KMX
−$0
55 sh
KMX
−$108.8K
1,540 sh @ $71
KMX
+$0
2,753 sh
KMX
+$0
2,753 sh
KMX
+$0
2,753 sh
KMX
+$0
2,753 sh
KMX
+$0
2,753 sh
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About KMX insider activity
This page tracks every recent Form 4 filed for CARMAX INC with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.
The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.
Frequently asked questions
How often is KMX insider data updated?
Continuously. We read from SEC EDGAR, so new Form 4 filings for CARMAX INC usually appear here within minutes of being accepted by the SEC.
What does "net insider flow" mean?
It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.
Why do some rows show grants or option exercises instead of buys?
Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.
Is this investment advice?
No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.